1990
J. T. Visscher et Lee, M. D.,
« Water harvesting in five African countries », vol. no. 14. IRC, The Hague, The Netherlands, p. xiii, 108 p.: fig., tab., 1990.
G. B. Internatio London, Newsletter, W. Industry I., et 90, A. Water Tech,
« Water in Africa - the next decade : 4th African Water Technology Conference, 20-22 February 1990, Kenyatta International Conference Centre, Nairobi, Kenya ». International Conferences and Exhibitions, S.l., p. 153 p. : fig., tab., 1990.
J. B. Doolette et Magrath, W. B.,
Watershed development in Asia : strategies and technologies, vol. no. 127. Washington, DC, USA: World Bank, 1990, p. viii, 227 p.: fig., tab.
1989
P. Roark, Donnelly-Roark, P., et Yacoob, M.,
« Developing sustainable community water supply systems : key questions for African Development Foundation applicants », vol. no. 4. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ii, 45 p.: fig., tab., 1989.
N. L. Euroconsul Arnhem, IN, I. Ministry o, Nijmegen, N. L. Royal Hask, Delhi, I. N. Iramconsul, DGIS, D. General fo, et Bombay, I. N. A. I. C. -,
« Environmental and Sanitary Engineering Project in Kanpur and Mirzapur Under Ganga Action Plan : mid term status report ». Netherlands, Ministry of Foreign Affairs, DGIS, The Hague, The Netherlands, p. 151 p. : fig., 1989.
P. Buijs, Silva, H., et Burdman, G. M.,
« Evaluation of the CARE water supply and sanitation project in the Dominican Republic », vol. no. 261. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xii, 114 p.: fig., tab., 1989.
P. Roark, Donnelly-Roark, P., et Yacoob, M.,
« Mise en place de systemes durables d'alimentation en eau : questions cle pour les demandes faites aupres de la Fondation Africaine de Developpement », vol. no. 4. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ii, 50 p.: tab., 1989.
C. Polprasert,
Organic waste recycling. Chichester, UK: Wiley, 1989, p. xiv, 357 p.: fig., tab.
WHO -Geneva, CH, World Health Organization,
« Principles and models to achieve sustainable community water supply and to extend household sanitation : report of the fourth Consultation on Institutional Development : Working Group on Cost Recovery, Geneva, 21-25 November 1988. Volume II ». World Health Organization (WHO), Geneva, Switzerland, p. 11, 39 p. : fig., tab., 1989.
K. E. Groundwate Nairobi,
« Well siting guide », vol. vol. 2. Groundwater Survey (Kenya), Nairobi, Kenya, p. 60 p. + 20 p. ann.: fig., tab., 1989.